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Coke fine briquette machine – set up briquette plant with roller press

A coke briquette line in China

Coke fine briquette machine is used to recycle the coke fine which is treated as a waste in the industry. The selling price is very low for this waste compares to the lump coke, but briquette work changes this condition and turns it to be a useful and valuable resource.

Two common coke types

There are several types of cokes in the industry. The main coke fine for briquetting are the following two types

  • Petroleum coke

The petroleum coke is a byproduct of the petroleum refining process. Different quality petroleum coke has its specific usage in different industries, and most of them are used in the cement industry.

  • Coal coke

Coal coke is the main product of the coal coking process. Most of the coal coke is used in the steel plant to produce iron, so it has other names like blast furnace coke or metallurgy coke, etc.

There are also other type coke like the asphalt coke, but most of the coke need to briquette is the petroleum coke.

Chart: Applications of  petroleum coke

Application Coke Type Status Industry
Carbon source needle coke calcination electrode;
synthetic graphite.
sponge coke calcination produce aluminum anode;
TiO2 pigment;
sponge coke green coke silicon carbide;
foundry and glass factory;
coke oven.
Fuel sponge coke lump green coke industrial boilers;
waste heat power generation;
space heat source.
sponge coke green coke
shot coke green coke
fluid coke green coke
flexible coking coke green coke

Coke fine waste sources for briquette machine

Coke fine sources mainly come from these areas

  1. from low coking temperature. It contains petroleum coke with the wrong operation and coke from lignite, this is something we call as green coke;
  2. from the transportation and storage process;
  3. from the pre-crushing process.

The world generates lots of coke every year (find the data from the chart below).  Almost 10% of the coke finally become powder type in this way or that. In some cases, the rate can even be up to 30%.

global coke production 1993 to 2014Global coke production 1993 to 2014

Why recycle the coke fine by briquetting

Coke fine, most of which the recycle way is burning. Thus, briquetting becomes a very good way as the support.

Cokes are different in particle density, size, and even the internal structure. These make them quite different in chemical properties. It becomes hard to recycle them together in different fields.

But due to it high carbon rate, it is easy to use as a heat source, and briquette makes it easier to use. Briquette is a kind way to treat the waste coke in a way simple, easy and with low investment.

These certain coke fine also can be reused by briquetting and reduce our cost on the lump coke.

Make coke fine briquette with roller press

roller press

Coke is a kind of material with less plasticity, direct briquette is a not a possible way to deal with it. Therefore, in the briquetting process, we need to add other additives especially binder for making the briquette.

Roller briquette press machine is a common equipment which is used to make the coke briquette.  The machine is with a single structure, easy to operate, and with a continuous working process.

The working principle

roller press working principle

After uniformly mixed with other materials, the coke then is fed into the briquette machine by it’s feeding hopper. Space becomes smaller and smaller when it going from the top to the center of the two rollers. Meanwhile, the briquetting pressure becomes larger and larger.

With the function of the binder, these mixed materials (mainly coke) combined together on the high pressure, and turns to briquette. As the roller moves down forward, the briquette output from the rollers, thus these dust becomes briquette.

finished coke briquette

Recycle the coke fine by setting up the coke briquette plant

Coke briquette process normally follows this way

Raw coke fine – crush (crusher) – mix with binder (mixer) – briquette (briquette machine) – drying (natural drying or dryer)

In this process, except the briquette machine, there are also other machines we will use for

  • Crusher

Raw coke is not all with the proper size for briquette, crush it first to get a size suitable for briquetting.

  • Mixer

Mixing is a very important process in briquette making, mix raw material well with binder helps to increase the forming rate and make better quality briquette.

  • Dryer

Work with a dryer we can quickly get the coke briquette with low moisture.

Reference Flowchart

coke briquette plant process

Benefits of making coke briquette

The coke briquette can be used as industrial boiler fuel, fixed bed gasification fuel, coking fuel, etc.

Mainly the benefits are the follows

  1. Environment protection
  2. Easy to transport and store
  3. Energy saving and lower the cost

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